and install the valve core. Then, reinflate the tire toits maximum operation pressure. You should allowthe tire to remain at this pressure for a minimum of 10minutes. At the end of this 10-minute period, thereshould be no detectable pressure loss.NOTE: Install only aircraft tire valve cores,P/N TRC24 or C4, identified by a slot in thehead of the pin. See figure 11-25.If no pressure loss is detected, the tire pressure isreduced to 50 percent of the maximum operatingpressure or 100 psi, whichever is less. The tire andwheel assembly is then removed from the safety cage,a valve cap installed, and the assembly stored in arack, ready for issue.If there is a significant pressure loss, the tirepressure is reduced to 50 percent of the maximumoperating pressure or 100 psi, whichever is less.Then, the assembly is removed from the safety cageFigure 11-24.Inflation safety cage with aircraft tireand the cause of the leak determined. If a slow leak isdetected, the air retention test should be extended toInflator/monitor attached.Figure 11-25.Valve core identification.11-25